Distinct dynamic connectivity profiles promote enhanced conscious perception of auditory stimuli.
Commun Biol
; 7(1): 856, 2024 Jul 12.
Article
de En
| MEDLINE
| ID: mdl-38997514
ABSTRACT
The neuroscience of consciousness aims to identify neural markers that distinguish brain dynamics in healthy individuals from those in unconscious conditions. Recent research has revealed that specific brain connectivity patterns correlate with conscious states and diminish with loss of consciousness. However, the contribution of these patterns to shaping conscious processing remains unclear. Our study investigates the functional significance of these neural dynamics by examining their impact on participants' ability to process external information during wakefulness. Using fMRI recordings during an auditory detection task and rest, we show that ongoing dynamics are underpinned by brain patterns consistent with those identified in previous research. Detection of auditory stimuli at threshold is specifically improved when the connectivity pattern at stimulus presentation corresponds to patterns characteristic of conscious states. Conversely, the occurrence of these conscious state-associated patterns increases after detection, indicating a mutual influence between ongoing brain dynamics and conscious perception. Our findings suggest that certain brain configurations are more favorable to the conscious processing of external stimuli. Targeting these favorable patterns in patients with consciousness disorders may help identify windows of greater receptivity to the external world, guiding personalized treatments.
Texte intégral:
1
Collection:
01-internacional
Base de données:
MEDLINE
Sujet principal:
Perception auditive
/
Stimulation acoustique
/
Encéphale
/
Imagerie par résonance magnétique
/
Conscience
Limites:
Adult
/
Female
/
Humans
/
Male
Langue:
En
Journal:
Commun Biol
Année:
2024
Type de document:
Article
Pays d'affiliation:
France
Pays de publication:
Royaume-Uni